How diverse are the kids bringing in the weapons? What group brings more guns?
Fact. The first kids to act out in any class I've been in are black kids 99% of the time.
The 2 kids who brandished the meter sticks around my face and the kid who disconnected the phone when I attempted to call the dean--black.
The first kids in any class who start fighting, girls included--black.
If the white kids remaining in those schools are smart they are seriously weighing the chances of being caught with an effective weapon against the chances of being maimed or killed without the means of defense by their otherly racial peers. Some will make the wrong bet.